18424433233 has 2 divisors, whose sum is σ = 18424433234. Its totient is φ = 18424433232.

The previous prime is 18424433221. The next prime is 18424433263. The reversal of 18424433233 is 33233442481.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18400108609 + 24324624 = 135647^2 + 4932^2 .

It is a cyclic number.

It is not a de Polignac number, because 18424433233 - 2⁹ = 18424432721 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18424433192 and 18424433201.

It is not a weakly prime, because it can be changed into another prime (18424433263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9212216616 + 9212216617.

It is an arithmetic number, because the mean of its divisors is an integer number (9212216617).

Almost surely, 2^18424433233 is an apocalyptic number.

It is an amenable number.

18424433233 is a deficient number, since it is larger than the sum of its proper divisors (1).

18424433233 is an equidigital number, since it uses as much as digits as its factorization.

18424433233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 165888, while the sum is 37.

The spelling of 18424433233 in words is "eighteen billion, four hundred twenty-four million, four hundred thirty-three thousand, two hundred thirty-three".